| CPC H04M 1/72445 (2021.01) [G06F 40/134 (2020.01); G06Q 20/127 (2013.01); H04L 67/02 (2013.01); H04L 67/146 (2013.01); H04M 1/72436 (2021.01)] | 25 Claims |

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1. A method, comprising:
displaying a promotional message via a user interface of a first application;
detecting a user interaction with the user interface of the first application while the promotional message is being displayed;
initiating a uniform resource identifier (URI) associated with the promotional message that deeplinks to and causes a mobile device to automatically (1) switch from rendering the user interface of the first application to rendering a text messaging application user interface and (2) generate a text message with a pre-populated phone number and a pre-populated message body containing a request to join a subscription list;
detecting a user interaction with a send button of the text messaging application user interface;
sending the text message to the pre-populated phone number in response to detecting the user interaction with the send button such that a server associated with the pre-populated phone number subscribes the mobile device to the subscription list in response to the text message being sent to the pre-populated phone number; and
receiving a message of a subscription associated with the subscription list without sending an opt-in communication after sending the text message containing the pre-populated message body.
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